Abstract: Health eyeglasses include a frame front, a pair of lenses mounted at the frame front, and a pair of temples pivotally connected to two opposite sides of the frame front. Each lens includes an optical substrate, which is made from a methacrylic polymer material and provided therein with an anion material. A front surface of the optical substrate is sequentially provided with a layer of UV coating, a layer of blue-light filter, and a layer of anti-fog coating. The frame front and the temples are made from a resin material added with an anion material, and thus can produce negative ions, which are beneficial to human health, so that the eyeglasses can promote the health of a wearer's eyes in addition to the function of optical correction.

Abstract: An optical lens of the present disclosure assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, an optical filter and a sensor. The optical lens also has an axis. The first lens element, the fourth lens element and the sixth lens element have negative power, the second lens element, the third lens element and the fifth lens element have positive power.

Abstract: An image pickup lens comprises a first lens having negative refractive power, a second lens having positive refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, and a fifth lens having negative refractive power, from an object side to an image side. The image pickup lens has an optical axis. A portion of a surface of the first lens facing the object side and close to the axis is convex, a portion of a surface of the first lens facing the image side and close to the axis is concave. A portion of a surface of the fourth lens facing the object side and close to the axis is convex, a portion of a surface of the fourth lens facing the image side and close to the axis is convex. The image pickup lens has large field of view and small volume.

Abstract: The present disclosure relates to sensor systems for electronic ophthalmic devices. In certain embodiments, the sensor systems may comprise a sensor such as an adjustable resistor configured in series with an eye of a user of the electronic ophthalmic device. The sensor systems may comprise a gain stage configured to amplify a signal indicative of a difference between a voltage drop across the eye and the adjustable resistor. The sensor systems may comprise an integrator configured to integrate the amplified signal. A resistance value of the adjustable resistor is configured to cancel a DC component of a resistance of the eye when an electrical current is caused to flow through the eye and the adjustable resistor. As such, the configured resistance value of the adjustable resistor is indicative of an impedance of the eye.

Abstract: A zoom lens includes a first lens group, a second lens group, a third lens group, a fourth lens group and an aperture. The first lens group, the second lens group, the third lens group and the fourth lens group are sequentially arranged in a direction. The aperture is located between the second lens group and the third lens group. When the zoom lens performs a zoom operation, the first lens group and the third lens group are fixed and the second lens group and the fourth lens group are moved, and a moving distance of the fourth lens group on an optical axis of the zoom lens is less than 5 mm.

Abstract: The present application relates to an electrochromic element and a method for manufacturing the same. A method for manufacturing an electrochromic element according to an exemplary embodiment of the present application comprises: forming a first electrode on a first substrate, and then forming a first electrochromic unit on the first electrode; forming a second electrode on a second substrate, and then forming a second electrochromic unit on the second electrode; and forming an electrolyte layer between the first electrochromic unit and the second electrochromic unit, in which the forming of the first electrochromic unit is carried out by an E-beam deposition method (E-beam evaporation) using a carrier gas.

Abstract: The present invention provides a vision assistive device, including: a first reflector, a second reflector and a third reflector. The first reflector is disposed at a first position of a cornea of a human eye. The second reflector is disposed at a second position of the cornea of the human eye. The third reflector is directly disposed in front of the cornea of the human eye. The first reflector and the second reflector are configured to reflect external light such that the external light is focused at the third reflector. Then, the external light is reflected again by the third reflector to the human eye, thereby enhancing a light intensity of the external light received by the human eye.

Abstract: A beam steering device, an optical apparatus including the beam steering device, and a beam steering method are provided. The beam steering device includes a polarization converter adjusting a polarization direction of light that is emitted from a light source, and an antenna array receiving the light from the polarization converter and emitting light in different propagating direction depending on the polarization direction of the light from the polarization converter.

Abstract: A wearable 3D augmented reality display and method, which may include 3D integral imaging optics.

Abstract: A lens system comprises a first electro-active lens comprising a first focus sensor coupled to a first processor and a second electro-active lens comprising a second focus sensor coupled to a second processor. The first focus sensor periodically generates electromagnetic signals and detects electectromagnetic signals generated by the second focus sensor. The second focus sensor periodically generates electromagnetic signals and detects electectromagnetic signals generated by the second focus sensor. The first processor receives an indication of the second electromagnetic signals and, based on the received indication of the second electromagnetic signals, determines a relative convergence angle between the first and second electro-active lenses. Based on the determined relative convergence angle, the first processor determines a focal setting for the first electro-active lens and controls an electroactive element in the first electro-active lens, based on the determined focal setting.

Abstract: An optical imaging lens includes: first, second, third, fourth, fifth, sixth and seventh lens element, the first lens element has positive refracting power and an image-side surface with a concave portion in a vicinity of its periphery, the second lens element, the sixth lens element and the seventh lens element are made of plastic, the third lens element has an object-side surface with a concave portion in a vicinity of its periphery and an image-side surface with a concave portion in a vicinity of the optical axis, the fourth lens element has an object-side surface with a convex portion in a vicinity of the optical axis, the fifth lens element has an object-side surface with a concave portion in a vicinity of the optical axis. In addition, ?3 and ?5 are the Abbe numbers of the third and the fifth lens element respectively, and satisfying the relationship: ?3+?5?100.000.

Abstract: An optical apparatus includes a lightguide and an optical combiner. The lightguide receives display light having an initial cross-section size and guides the display light down the lightguide. The lightguide includes internal optical elements that redirect the display light out of the lightguide with an expanded cross-section size that is larger than the initial cross-section size. The optical combiner combines the display light having the expanded cross-section with ambient scene light. The optical combiner includes an ambient scene side, an eye-ward side, and one or more reflective optical elements that pass at least a portion of the ambient scene light incident along an eye-ward direction on the ambient scene side through to the eye-ward side and redirect the display light having the expanded cross-section and incident on the eye-ward side to the eye-ward direction. The one or more reflective optical elements are substantially without lensing power.

Abstract: An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens can have negative refractive force. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

Abstract: Methods and systems are disclosed relating to a lens system that allows for simultaneous focus of near and far-away images with one pair of glasses, heads-up-displays (HUDs), and the like, without the need to move the user's eyes. This lens system may be used in a HUD application, for example, where the user may focus on a display lens that may be approximately one inch from the eye to view computer-generated information such as altitude, temperature, directions, and the like, and simultaneously view the individual's surroundings. The lens system may include a liquid lens that when modulated may vary from a near-focus state to a far-focus state rapidly by using an electrowetting or piezoelectric hydraulic actuator. This variable rate lens may be multiplexed at a rate that allows both near and far-away images to appear in focus simultaneously through the advantageous use of a user's persistence of vision.

Abstract: An electronic device on which an exterior surface mounting member is mounted is provided. The electronic device includes an external housing including a first plate and a second plate that is directed opposite to the first plate, and at least one electronic component that is included within the external housing. The first plate may include a transparent plate including a first surface that forms an outer surface of the first plate and a second surface that is directed opposite to the first surface, and a structure that is interposed between the transparent plate and the second plate, and includes a third surface that faces the first plate and a fourth surface that is formed opposite to the third surface, the structure containing a transparent or translucent material.

Abstract: An ophthalmic examination suite including a base support having a base plate, a carriage movable on the base plate, the carriage being laterally movable between a first position and a second position relative to an instrument delivery stand, and a chair coupled to the carriage, the chair being configured to receive a seated patient thereon.

Abstract: The imaging lens includes, in order from the object side, a first lens group that remains stationary during focusing; a diaphragm; and a positive second lens group that moves to the object side during focusing from a long range to a close range. The first lens group includes, in order from the object side: a negative meniscus lens that has an absolute value of a radius of curvature of an image side surface smaller than that of an object side surface, a negative lens, a positive lens, and a negative lens. The second lens group includes five or less lenses, and includes: a positive Z lens that is formed continuously in order from a most image side; a negative Y lens that has an absolute value of a radius of curvature of an object side surface smaller than that of an image side surface; and a positive X lens.

Abstract: According to embodiments of the present invention, an apparatus comprising a beam shaping element (lens) is provided. The apparatus comprises a substrate; a beam shaping element; and an elastic intermediate layer disposed between, and in contact with, the substrate and the beam shaping element, wherein the elastic intermediate layer has a Young's Modulus in a range of 2-600 MPa and a Poisson's ratio in a range of 0.2-0.5. Techniques for reducing thermal distortion of lens are described.

Abstract: Fluorinated and hydrogenated diamond-like carbon (“DLC-FH”) that have unique optical properties differ as a class from the existing DLC art, whose refractive indices [?]are limited to rather high values above a lower threshold of 1.7, and can range up to about 2.7. The DLC-FH materials can achieve very low refractive indices at 550 nm wavelength, [?550], i.e., below 1.5, and especially demonstrated down to 1.3. Moreover, whereas the absorption for the existing DLC art, as quantified by the extinction coefficient [?] at a wavelength of 550 nm, [?550] is limited to about 0.04, our DLC-FH material can achieve [?550] below 0.01. Both of these attributes, i.e., low [?550] and low [?550] means that, for the first time, a carbon-based material as represented by the DLC-FH material, can be used for anti-reflection (AR) coating, wherein there are no longer any restrictions in how they can be used to promote low reflectance (with low fit[?]) and high transmittance (with low [?]).

Abstract: A photographing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The fourth lens element with negative refractive power has an object-side surface being convex and an image-side surface being concave in a paraxial region thereof, wherein, either the object-side surface thereof, the image-side surface thereof or both the two surfaces thereof have at least one critical point in an off-axial region thereof, and either the object-side surface thereof, the image-side surface thereof or both the two surfaces thereof are aspheric.